Cydia millenniana (Adamczewski, 1967)
Larix decidua, Germany, North Rhine Westphalia, Warburg-Welda, 17.iii.2019 © Hubertus Trilling
Larix sp., Hongarije © György Csóka, Hungary Forest Research Institute, Bugwood.org
Shoot gall, mostly in the bifurcation of a two-years old shoot. The boring work of the larva, an off-white or greyish caterpillar, in the twig causes it to swell to sometimes twice its normal diameter. The occupied gall is soft and spongy, vacated ones are hard and dry. Mostly much resin is extruded. The gall is occupied from June till April, May of the second year. Pupation internal. After the gall has been vacated it still may continue to grow considerably, up to th size of a larch cone.
Cydia, Grapholita, Laspeyresia zebeana: Buhr, Houard
Buhr (1964a), Dauphin & Aniotsbehere (1997a), Gielis Huisman, Kuchlein ao (1985a), Hancock & Bland (2015a), Hellrigl (2010a), Houard (1908a), Redfern & Shirley (2011a), Retzlaff & Seliger (2002a), Roweck & Savenkov (2010a), Szabóky & Csóka (2010a).